Few ui fixes: network graph and accept mr button

app/assets/stylesheets/sections/graph.scss

@@ -4,7 +4,8 @@
   h4 {
-    padding: 0 10px;
+    margin: 0;
+    padding: 10px;
     border-bottom: 1px solid #bbb;
     @include bg-gray-gradient;
   }

app/assets/stylesheets/sections/projects.scss

@@ -86,7 +86,7 @@ ul.nav.nav-projects-tabs {
     border-bottom: 1px solid #eee;
     .description {
-      margin-left: 22px;
+      margin-left: 15px;
       color: #aaa;
     }
   }

app/views/projects/merge_requests/show/_mr_accept.html.haml

@@ -14,7 +14,7 @@
             %strong= link_to "click here", "#", class: "how_to_merge_link vlink", title: "How To Merge"
             for instructions
           .accept_group
-            = f.submit "Accept Merge Request", class: "btn btn-success accept_merge_request"
+            = f.submit "Accept Merge Request", class: "btn btn-create accept_merge_request"
             - unless @project.root_ref? @merge_request.source_branch
               .remove_branch_holder
                 = label_tag :should_remove_source_branch, class: "checkbox" do

app/views/projects/network/_head.html.haml

 %h3.page-title Project Network Graph
-%hr
 .clearfix
   .pull-left

app/views/public/projects/index.html.haml

@@ -17,7 +17,7 @@
   %ul.unstyled
     - @projects.each do |project|
       %li.clearfix
-        %h5
+        %div
           %i.icon-share
           - if current_user
             = link_to_project project
@@ -25,7 +25,7 @@
             = project.name_with_namespace
           .pull-right
             %pre.dark.tiny git clone #{project.http_url_to_repo}
-        %p.description
+        %div.description
           = project.description
     - unless @projects.present?
       %h3.nothing_here_message No public projects